+61-413 786 465
info@mywordsolution.com
Home >> Physics
You're burning calories by weight lifting. You lift a 65kg barbell and 1.8m and repeat 15 times.
1. How much energy in J do you expend?
2. How much energy in Cal do you expend?
Physics, Academics
A soccer player kicks the ball that travels a distance of 45.0 m on a level field. The ball leaves his foot at an initial speed of (v0) and an angle of 25.0° above the ground. Find the initial speed (v0) of the ball.
One cubic meter (1.00m^3) of concrete has a mass of 2.30E+3kg, and 1.00m^3 of copper has a mass of 8.92E+3kg. Find the radius of an concrete sphere whose mass is the same as that of an copper sphere of radius 1.28cm?
Question: A rocket starts from rest and moves upward from the surface of the earth. For the first 10s of its motion, the vertical acceleration of the rocket is given by ay=(3.00m/s3)t, where the +y-direction is upward. W ...
Question: A proton (with a rest mass m=1.6 x 10 27 kg) has a total energy that is 4.00 times its rest energy. What is the magnitude of the momentum p of the proton? Please explan in detail each step and what equations ar ...
Question: A sled and rider, gliding over horizontal, frictionless ice at 5.8 m/s, have a combined mass of 86 kg. The sled then slides over a rough spot in the ice, slowing down to 3.0 m/s. What impulse was delivered to t ...
Question: What is the spacing (in mm) between the slits? Light from a helium-neon laser (? = 633 nm) is used to illuminate two narrow slits. The interference pattern is observed on a screen3.3m behind the slits. Eleven b ...
Question: Your physics textbook is sliding to the right across the table. Identify all forces acting on the object: A) Weight, Kinetic friction B) Thrust; Kinetic friction C) Normal force ; Weight ; Kinetic friction ; D) ...
Question: A spring of negligible mass has force constant k = 1500N/m . Part (a): How far must the spring be compressed for an amount 3.40J of potential energy to be stored in it Part(b): You place the spring vertically w ...
Question: Phenols do not exhibit the same pKa values as other alcohols; they are generally more acidic. Using the knowledge that hydrogen acidity is directly related to the stability of the anion for (conjugate base), ex ...
Question: An old-fashioned single-play vinyl record rotates on a turntable at 38.0rpm . What are (a) the angular velocity in rad/s and (b) the period of the motion? The response must be typed, single spaced, must be in t ...
Start excelling in your Courses, Get help with Assignment Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.
Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate
Describe the difference between zero coupon bonds and coupon bonds. Under what conditions will a coupon bond sell at a p
Compute the present value of an annuity of $ 880 per year for 16 years, given a discount rate of 6 percent per annum. As
Compute the present value of an $1,150 payment made in ten years when the discount rate is 12 percent. (Do not round int
Compute the present value of an annuity of $ 699 per year for 19 years, given a discount rate of 6 percent per annum. As